Chief Technical Officer (Barcelona)

Overview

Antai Ventures is a Barcelona‑based venture studio with presence across Southern Europe and LatAm.

We partner‑up and invest in the best co‑founders to build integral companies willing to disrupt multi‑billion dollar industries. We have a validated product thesis, a clear go‑to‑market, and we're now looking for a co‑founder & CTO to build it.

Responsibilities

Design and implement a multi‑agent orchestration layer — persistent state management, agent‑to‑agent handoffs, tool‑calling pipelines, and context windows that don't collapse under real usage.

Integrate third‑party infrastructure (voice providers, CRMs, payment and signing APIs, document verification) into a coherent, maintainable system.

Qualifications

• Proven track record as a hands‑on engineer, tech lead, or CTO in an early‑stage environment.
• Take responsibility for outcomes and think long‑term about product and company value.
• Fluency in ...